{"instruction": "You are an expert in event extraction. Please extract events from the input that conform to the schema definition. Return an empty list for events that do not exist, and return NAN for arguments that do not exist. If an argument has multiple values, please return a list. Respond in the format of a JSON string.", "schema": [{"event_type": "adverse event", "trigger": true, "arguments": ["Subject.Race", "Treatment.Disorder", "Combination.Drug", "Treatment.Duration", "Effect", "Treatment.Dosage", "Treatment.Route", "Treatment.Freq", "Subject.Population", "Treatment", "Treatment.Time_elapsed", "Subject.Age", "Subject.Disorder", "Subject", "Treatment.Drug", "Subject.Gender"]}, {"event_type": "potential therapeutic event", "trigger": true, "arguments": ["Subject.Gender", "Subject.Disorder", "Treatment.Route", "Subject.Population", "Subject", "Treatment", "Subject.Age", "Treatment.Duration", "Subject.Race", "Treatment.Time_elapsed", "Treatment.Freq"]}], "input": "We report a case of vitiligo that occurred during the second month of interferon alpha 2a therapy for chronic active hepatitis C."}
{"adverse event": [{"trigger": "occurred ", "arguments": {"Subject.Race": "NAN", "Treatment.Disorder": "chronic active hepatitis C.", "Combination.Drug": "NAN", "Treatment.Duration": "the second month", "Effect": "vitiligo", "Treatment.Dosage": "NAN", "Treatment.Route": "NAN", "Treatment.Freq": "NAN", "Subject.Population": "NAN", "Treatment": "during the second month of interferon alpha 2a therapy", "Treatment.Time_elapsed": "NAN", "Subject.Age": "NAN", "Subject.Disorder": "NAN", "Subject": "NAN", "Treatment.Drug": "interferon alpha 2a", "Subject.Gender": "NAN"}}], "potential therapeutic event": []}